Fonts not working properly

[AmberStarfire]

Hopefully this is the right place to share this and isn't a repeat of a post made earlier.

I just posted for one of my stories and I semi-randomly picked some font colours to highlight dialogue. Two of the colours I chose were navy and beige. I noticed after I sent in my post that the text wasn't showing up at all - there were gaps that looked like I'd deleted my dialogue by mistake. I went back to modify it and noticed that the dialogue was still there, it just wasn't showing up because of the font colours. I changed the colours and now it's fine.

I only noticed two that weren't working correctly but I haven't tried out most of the other colours. I'm not sure if this is likely to be something that's affecting the whole site, but I'm guessing it might be.

[Autumn Sativus]

navy beige

They seem to be working fine for me. Though beige is one of those eye-stabbing shades that doesn't appear very well on the background. Would that be it?

[AmberStarfire]

I can see your post coloured Navy. Some of it was coming up blank earlier. Of those below, it's only Beige I'm not seeing.

Testing them:

Black
Red
Yellow
Pink
Green
Orange
Purple
Blue
Beige
Brown
Teal
Navy
Maroon
Lime Green
White

[Oniya]

I can make out beige only barely, and that's likely because I'm one of those sick people who can identify DMC floss without looking at the labels.

[AmberStarfire]

It could just be hard to see against the background on my laptop screen. I can't see beige at all.

[Beguile's Mistress]

Different screens display differently.  There are some things I have trouble seeing on my laptop at home but when I use the remote access to view my home computer from work those things are much clearer.  You might want to play around with the Contrast and Brightness settings on your Control Panel.  However, keep in mind that if you are having trouble seeing certain colors so is pretty much everyone else.  Yellow, pink and beige from your list make my eyes hurt and orange and lime green give me a headache.  Those colors are best utilized in some of the fancier features like shadowing.