Scheme Color Tagname in xml does not Match with MSO_THEME_COLOR_INDEX

[zhar97]

I was also attempting to grab the scheme color value as the following:

from pptx.opc.constants import RELATIONSHIP_TYPE as RT
from pptx.oxml import parse_xml

slide_master = slide.slide_layout.slide_master
slide_master_part = slide_master.part
theme_part = slide_master_part.part_related_by(RT.THEME)

theme = parse_xml(theme_part.blob)  # theme here is an <a:theme> element
srgbClr = theme.xpath('a:themeElements/a:clrScheme/a:accent1/a:srgbClr/@val')[0]
print(srgbClr)  

Originally posted by @scanny in #308 (comment)

However, I noticed an anomaly of mismatching between the actual scheme color index (from loaded .pptx) and the child tagname of <a:clrScheme>.

For example,
FillFormat.fore_color.theme_color return BACKGROUND_1
meanwhile the xml actually stored the color value under <a:lt1> which actually corresponds to LIGHT_1.

[willkim1]

Can you upload a file that demonstrates this issue? Thanks.

[gsmedley]

I've seen something like this, maybe has to do with background colors being mapped to light:

<p:clrMap bg1="lt1" tx1="dk1" bg2="lt2" tx2="dk2" accent1="accent1" accent2="accent2" accent3="accent3" accent4="accent4" accent5="accent5" accent6="accent6" hlink="hlink" folHlink="folHlink"/>

As described here:

http://officeopenxml.com/prSlide-color.php