Looks like a great start. What do you need for the sprites? I create them with a script and it should be easy to flip them horizontally if that is what you want.

@cash thanks :-)

the elgg_sprites.png has some items that point in a horizontal or diagonal direction which need to be flipped:

left/right arrows, speech bubbles(comment icons), likes icons, tag icons, search icons  all the rest is fine.

much appreciate your offer of help!

Which arrows? I think the arrows should have both right and left versions already in there. You should be able to switch them in the css. The rest I understand.

ha, I didn't think of that of course I'll have a go.

that worked fine

in theme   views/css/elements/icons.php

changed

.elgg-icon-arrow-right {
    background-position: 0 -18px;
}

to

.elgg-icon-arrow-right {
    background-position: 0 1px;
}