Color Selection Box

How can I change the color of my text on the admin portal structure page, custom block section, when the color palet comes up behind the help icon? I can not access very many colors, to include white, because of this. Is there any way you can change the location on where the color box pops up??

Thank you,
wildchildz

you can use hex colour code, white is

Code:

#FFFFFF

Thank you!!