Item13883: remove explicit bg colors

... as thats unreadable in dark mode

core/data/System/AppendixCascadingStyleSheets.txt

@@ -1,4 +1,4 @@
-%META:TOPICINFO{author="ProjectContributor" date="1490666627" format="1.1" version="1"}%
+%META:TOPICINFO{author="ProjectContributor" date="1716288892" format="1.1" version="1"}%
 %META:TOPICPARENT{name="DeveloperDocumentationCategory"}%
 %STARTINCLUDE%
 ---+ Appendix C: CSS
@@ -25,7 +25,6 @@ A wide range of standard styles are used in the Foswiki core code and topics, an
 
 ---+++ Structural elements
 <sticky>
-%TABLE{databg="#fff"}%
 |=.foswikiContainer=             | Container around all level one page elements to maintain consistent width and margins |
 |=.foswikiPage=                  | The container for the complete page contents, just below the body tag (only used by default templates)  |
 |=.foswikiTopic=                 | The container for the topic contents |
@@ -52,7 +51,6 @@ A wide range of standard styles are used in the Foswiki core code and topics, an
 
 ---+++ General appearance
 <sticky>
-%TABLE{databg="#fff"}%
 |=.foswikiLeft=              | Left float |
 |=.foswikiRight=             | Right float |
 |=.foswikiClear=             | Clear float; usually written as =&lt;div class="foswikiClear"&gt;&lt;/div&gt;= |
@@ -71,7 +69,6 @@ A wide range of standard styles are used in the Foswiki core code and topics, an
 
 ---+++ Links
 <sticky>
-%TABLE{databg="#fff"}%
 |=.foswikiCurrentWebHomeLink=       | Used by Render.pm if a link points to the web's home topic |
 |=.foswikiCurrentTopicLink=         | Used by Render.pm if a link points to the current topic |
 |=.foswikiEmulatedLink=             | Used in the preview screen to make fake links appear as links |
@@ -81,7 +78,6 @@ A wide range of standard styles are used in the Foswiki core code and topics, an
 
 ---+++ Tables
 <sticky>
-%TABLE{databg="#fff"}%
 |=.foswikiTable=                        | Tables, for instance used by TablePlugin  |
 |=.foswikiFirstCol=                     | Leftmost column  |
 |=.foswikiLastCol=                      | Rightmost column  |
@@ -100,7 +96,6 @@ A wide range of standard styles are used in the Foswiki core code and topics, an
 
 See also: [[#HtmlFormElements][HTML form elements]]
 <sticky>
-%TABLE{databg="#fff"}%
 |=.foswikiFormHolder=             | Outer container for the data form in edit; contains the textarea width |
 |=.foswikiFormTable=              | Table container for (editable) form elements  |
 |=.foswikiFormTableHRow=          | Table container for (editable) form elements  |
@@ -113,7 +108,6 @@ See also: [[#HtmlFormElements][HTML form elements]]
 #HtmlFormElements
 ---+++ HTML form elements
 <sticky>
-%TABLE{databg="#fff"}%
 |=.foswikiForm=                  | Container for data form in topic, including header |
 |=.foswikiActionFormStepSign=    | Indicator for each form step (see =foswikiFormStep=) |
 |=.foswikiFormSteps=             | Container around a form that contains a number of separate 'steps'; each 'step' in a separate row  |
@@ -140,7 +134,6 @@ See also: [[#HtmlFormElements][HTML form elements]]
 
 ---+++ Search and lists
 <sticky>
-%TABLE{databg="#fff"}%
 |=.foswikiSearchResult=             | Container around image and contents |
 |=.foswikiSearchResultContents=     | Search result content, such as title, summary, author |
 |=.foswikiSearchResultCount=        | Search results count |
@@ -162,7 +155,6 @@ See also: [[#HtmlFormElements][HTML form elements]]
 
 ---+++ Other elements
 <sticky>
-%TABLE{databg="#fff"}%
 |=.foswikiButtonGroup=              | Group of buttons. Introduced with Foswiki 2.0. |
 |=.foswikiToolbar=                  | Container for controls. Introduced with Foswiki 2.0. |
 |=.foswikiToolbarHeader=            | Header in =foswikiToolbar=. Introduced with Foswiki 2.0. |
@@ -176,7 +168,6 @@ See also: [[#HtmlFormElements][HTML form elements]]
 
 ---+++ History
 <sticky>
-%TABLE{databg="#fff"}%
 |=.foswikiDiffTable=                 | Revision table  |
 |=.foswikiMarker=                    | Demarkation of part |
 |=.foswikiDiffDeletedMarker=         | Demarkation of part that has been deleted |
@@ -197,7 +188,6 @@ See also: [[#HtmlFormElements][HTML form elements]]
 #BehaviourClasses
 ---+++ Behaviour classes
 <sticky>
-%TABLE{databg="#fff"}%
 Markers to invoke behaviour with unobtrusive !JavaScript.
 |=.foswikiFocus=                         | Behaviour marker so a field can be given input focus. As of Foswiki 2.0 this also requires to add =%<nop>JQREQUIRE{"focus"}%= to the page. |
 |=.foswikiChangeFormButton=              | "Replace form" button; clicking calls !JavaScript function =suppressSaveValidation=  |

core/data/System/DataForms.txt

@@ -1,4 +1,4 @@
-%META:TOPICINFO{author="ProjectContributor" date="1655468868" format="1.1" version="1"}%
+%META:TOPICINFO{author="ProjectContributor" date="1716288892" format="1.1" version="1"}%
 %META:TOPICPARENT{name="UserDocumentationCategory"}%
 %STARTINCLUDE%
 ---+!! Data Forms
@@ -260,7 +260,7 @@ Types with names like this can both take multiple values.
 ---+++ Attributes
 Extra attributes that control some aspects of how the field is handled.
 
-%TABLE{databg="#ffffff" columnwidths="20%,80%" sort="off"}%
+%TABLE{columnwidths="20%,80%" sort="off"}%
 | =H= | Indicates that this field should not be shown in view mode. However, the field is available for editing and storing information. |
 | =M= | Indicates that this field is mandatory. The topic cannot be saved unless a value is provided for this field. |
 

core/data/System/IfStatements.txt

@@ -1,4 +1,4 @@
-%META:TOPICINFO{author="ProjectContributor" date="1655468868" format="1.1" version="1"}%
+%META:TOPICINFO{author="ProjectContributor" date="1716288892" format="1.1" version="1"}%
 %META:TOPICPARENT{name="DeveloperDocumentationCategory"}%
 ---+!! IF statements
 
@@ -108,7 +108,7 @@ or
 ---++++ URL parameter test
 Be careful when you test for an empty value: if the URL parameter is not defined (not passed in the URL), the outcome might not be what you expected. Use the parameter test to check your assumptions.
 
-%TABLE{databg="#ffffff" headeralign="left" headerrows="2"}%
+%TABLE{headeralign="left" headerrows="2"}%
 | *Test* \
 | *IF query* \
 | *no param* \
@@ -164,7 +164,7 @@ Example:
 %INCLUDE{"%TOPIC%" section="includetest" name="Barry"}%
 <verbatim class='foswikiHidden'>
 %STARTSECTION{"includetest"}%
-%TABLE{databg="#ffffff" headeralign="left"}%
+%TABLE{headeralign="left"}%
 | *Test* \
 | *IF query param 'name'* \
 | *Result param 'name'* \