iframe, table, div, object, form, td, th, p, span{color: #0DD2E5 !important; background: #313131 !important;}
a:link{color: #5974FF !important}
a:visited{color: #FF5975 !important}
Steps:
a) I opened a css file and saved it as *.css (mine was /usr/share/opera/styles/user/user.css)
b) tools -> prefs -> advanced -> content -> style options -> selected my .css file in choose style sheet.
c) style -> options -> presentation modes -> set default to author mode and under author mode checked page style sheet and my style sheet (and also my fonts and colours and my links but they don't seem to affect anything).
I don't get quite understand css so just keeping it simple.
First line sets white text and black background. I took it from a default accessibility file (because if I just use "*" it removes images).
The last two lines change colours of links. For some reason if I use a lower number such as #1111FF for blue it appears as white link with blue underline (instead of as entirely blue link).
Current problem is the first line doesn't affect text input boxes such as the one I am typing this post in at the moment. Don't know how to include that.
If anyone has anything fancier would love to see it
biggrin