[LifesGreatestGift]

Open template memberlist

Find

		<vb:each from="memberlistbits" value="userinfo">
			<tr>
				<td class="alt1 username">

Replace With:

		<vb:each from="memberlistbits" value="userinfo">
			<tr<vb:if condition="is_member_of($userinfo, 6)"> style="background:red;"</vb:if>>
				<td class="alt1 username"<vb:if condition="is_member_of($userinfo, 6)"> style="background:red;"</vb:if>>

Enter your usergroup ID in the is_member_of function. It is currently set for usergroup 6. you can add additional groups separated by commas. Also change the

style="background:red;"

to what suites you.