configure add card/list colours

[sant0s]

Congratulations for Tekkan!

It'd be nice if, besides bg, navbg, listbg, textcolor and card, the following colours could also be tweaked:

• The colour of Add a card (currently hardcoded to #888)
• The colour of Add a list (currently hardcoded to rgba(255,255,255,.7))

Additionally, the documentation at https://ibnishak.github.io/Tekkan/#How%20to%20add%20custom%20palettes could be improved by replacing the 2nd step with something like:

Fill in the tiddler with the following information:

Name: $:/Tekan/Palette/<YourColourPaletteName>
Tag: $:/Tekan/Palette
Type: application/x-tiddler-dictionary
Content:

bg: <board background colour>
navbg: <navigation bar background colour> 
listbg: <list background colour> 
textcolor: <list title, card content, list action items, etc. foreground colour>
card: <? colour>
cardaddcolor: <"Add card" foreground colour>
listaddcolor: <"Add list" foreground colour>

I could not find where card is used. cardaddcolor and listaddcolor above are just name suggestions for the newly configured colours.