nyos, replace the #000000 with:
rgba(0,0,0,.9)
.9 is the opacity.
the 0,0,0 of course is the RGB that you'd need to know.
Will have a look at the other avatar borders soon - only just woke up
Edit:
For the
thread list avatars for created by, go to your style sheet and add the part in blue to the rest of the CSS that you should already have at the bottom..
.threads .avatar_size_small { height: 25px; width: 25px;
border: #000000 solid 2px; .rounded-corners(10px, 10px, 10px, 10px); }
.threads .avatar_size_small > img { max-height: 25px; width: 25px;
border: #000000 solid 2px; .rounded-corners(10px, 10px, 10px, 10px); }
As with the above, change the HEX code for the RGBA
On line 1162 - 1170, you should see:.avatar_size_default, .avatar_size_default embed, .avatar_size_default object, .avatar_size_default > div, .avatar-wrapper.avatar_size_default > div > div { height: 150px; width: 150px; }
.avatar-wrapper > div > div { display: table-cell; vertical-align: middle; }
.avatar_size_default img, .avatar_size_default default { max-height: 150px; max-width: 150px; }
.avatar_size_medium, .avatar_size_medium embed, .avatar_size_medium object, .avatar_size_medium > div, .avatar-wrapper.avatar_size_medium > div > div { height: 75px; width: 75px; }
.avatar_size_medium img, .avatar_size_medium default { max-height: 75px; max-width: 75px; }
.avatar_size_small, .avatar_size_small embed, .avatar_size_small object, .avatar_size_small > div, .avatar-wrapper.avatar_size_small > div > div { height: 50px; width: 50px; }
.avatar_size_small img, .avatar_size_small default { max-height: 50px; max-width: 50px; }
.avatar_size_quote, .avatar_size_quote embed, .avatar_size_quote object, .avatar_size_quote > div, .avatar-wrapper.avatar_size_quote > div > div { height: 30px; width: 30px; }
.avatar_size_quote img, .avatar_size_quote default { max-height: 30px; max-width: 30px; }
Turn it into (this will effect quote avatars, profiles, mini profiles and micro profiles).avatar_size_default, .avatar_size_default embed, .avatar_size_default object, .avatar_size_default > div, .avatar-wrapper.avatar_size_default > div > div { height: 150px; width: 150px; }
.avatar-wrapper > div > div { display: table-cell; vertical-align: middle; }
.avatar_size_default img, .avatar_size_default default { max-height: 150px; max-width: 150px;
border: #000000 solid 2px; .rounded-corners(10px, 10px, 10px, 10px); }
.avatar_size_medium, .avatar_size_medium embed, .avatar_size_medium object, .avatar_size_medium > div, .avatar-wrapper.avatar_size_medium > div > div { height: 75px; width: 75px; }
.avatar_size_medium img, .avatar_size_medium default { max-height: 75px; max-width: 75px;
border: #000000 solid 2px; .rounded-corners(10px, 10px, 10px, 10px); }
.avatar_size_small, .avatar_size_small embed, .avatar_size_small object, .avatar_size_small > div, .avatar-wrapper.avatar_size_small > div > div { height: 50px; width: 50px; }
.avatar_size_small img, .avatar_size_small default { max-height: 50px; max-width: 50px;
border: #000000 solid 2px; .rounded-corners(10px, 10px, 10px, 10px); }
.avatar_size_quote, .avatar_size_quote embed, .avatar_size_quote object, .avatar_size_quote > div, .avatar-wrapper.avatar_size_quote > div > div { height: 30px; width: 30px; }
.avatar_size_quote img, .avatar_size_quote default { max-height: 30px; max-width: 30px;
border: #000000 solid 2px; .rounded-corners(10px, 10px, 10px, 10px); }
Again, edit the hex codes to your liking (swapping #000000 with rgba(0,0,0,.9)