CSS Help for default text color

Right now my default text color is yellow, kinda ugly and I have a dark background I would like maybe a bright red text or advice on what a nice color would be. But I dont know CSS very well. I tried changing it the other way but it only saves in the admin CP area and not on the forum. Any help would be great.

Go on your Administration Panel=>Display=>Colors=>Text Color

I did that, it dont change after I press save, it might have to be changed in the css itself, from other things I have read. But I dont know alot about that to change anything in the css stylesheet

after changing something and saving it

go to your site and try pressing ctrl+F5
most issues get sorted out by it

That didnt work either ty thou