wordpress CSS cleanup

i have a wordpress template plexus its installed, and i have been configuring it. but i require some help on CSS. sometime is messing up the layout. i need the CSS cleaned up and whichever plugin is causing teh overwriting of my sidebar menus padding to be fixed. it also has to not break any other features of my website. i would also like to cleanup while at it font/colour scheme applied, so someone with a knowledge of complimentary colours preferred. just to make it look cleaner and match better it should be some quick CSS tweaks for someone who knows what they are doing.. i can cut and paste exisitng CSS current site [login to view URL] i will provide CSS code to selected freelancer