Use 256 colors by default

[flashcode]

Feature description

WeeChat should have default colors using the 256-color palette, and let the user enter these colors, even if the terminal supports less colors.

If the terminal supports less colors, WeeChat must use the nearest color available (by computing RGB difference).

Default value must be updated for the following color options:

Option	Old default	New default	RGB
fset.color.description	default	242	#6c6c6c
fset.color.description_selected	white	default	#808080
fset.color.line_marked_bg1	default	17	#00005f
fset.color.line_marked_bg2	default	17	#00005f
fset.color.line_selected_bg1	blue	24	#005f87
fset.color.line_selected_bg2	red	24	#005f87
fset.color.name_changed	brown	185	#d7d75f
fset.color.type	green	138	#af8787
fset.color.type_selected	lightgreen	216	#ffaf87
fset.color.value	cyan	38	#00afd7
fset.color.value_changed	brown	185	#d7d75f
fset.color.value_selected	lightcyan	159	#afffff
irc.color.reason_quit	default	244	#808080
irc.color.topic_new	white	36	#00af87
irc.color.topic_old	default	244	#808080
logger.color.backlog_end	default	246	#949494
logger.color.backlog_line	default	246	#949494
script.color.status_autoloaded	cyan	39	#00afff
script.color.text_bg_selected	red	24	#005f87
script.color.text_date	default	65	#5f875f
script.color.text_date_selected	white	50	#00ffd7
script.color.text_delimiters	default	240	#585858
script.color.text_description	default	249	#b2b2b2
script.color.text_extension	default	242	#6c6c6c
script.color.text_extension_selected	white	248	#a8a8a8
script.color.text_name	cyan	73	#5fafaf
script.color.text_name_selected	lightcyan	51	#00ffff
script.color.text_version	magenta	180	#d7af87
script.color.text_version_loaded	default	246	#949494
script.color.text_version_selected	lightmagenta	224	#ffd7d7
weechat.bar.status.color_bg	blue	234	#1c1c1c
weechat.bar.status.color_bg_inactive	darkgray	232	#080808
weechat.bar.title.color_bg	blue	234	#1c1c1c
weechat.bar.title.color_bg_inactive	darkgray	232	#080808
weechat.color.chat_delimiters	green	22	#005f00
weechat.color.chat_highlight_bg	magenta	124	#af0000
weechat.color.chat_inactive_window	default	240	#585858
weechat.color.chat_nick_offline	default	242	#6c6c6c
weechat.color.chat_nick_offline_highlight_bg	blue	17	#00005f
weechat.color.chat_prefix_buffer	brown	180	#d7af87
weechat.color.chat_prefix_suffix	green	24	#005f87
weechat.color.emphasized_bg	magenta	54	#5f0087
weechat.color.nicklist_away	cyan	240	#585858
weechat.color.separator	blue	236	#303030

In addition, the default value of these string options are changed:

• buflist.format.buffer_current: ${color:,blue}${format_buffer} to ${color:,17}${format_buffer}
• fset.format.option2: ${color:darkgray} to ${color:244}
• weechat.color.chat_nick_colors: cyan,magenta,green,brown,lightblue,default,lightcyan,lightmagenta,lightgreen,blue to cyan,magenta,green,brown,lightblue,lightcyan,lightmagenta,lightgreen,31,35,38,40,49,63,70,80,92,99,112,126,130,138,142,148,160,162,167,169,174,176,178,184,186,210,212,215,248
• weechat.look.prefix_suffix: | to │ (U+2502: box drawings: light vertical)

Before (WeeChat 3.8):

After changes: