Regarding Dyes

[Iscah]

I find that the colours are missing, even though they exist on ingame gears.

I would like for example this colour in a very bright way, but it doesn't exist, dark purple.

Have a look at "abyssal blue" dye. It really should be on the purple page.

I think the biggest gap we have is magenta, which gets used as a theme colour on some caster gear sets (eg. Shisui and Sky Pirate) and others like the Gambler and Yafaemi sets, but can't be matched at all, unless you want to go for the metallic dye.