Customise a Wordpress Theme

I require someone with good knowledge of wordpress themes & wordpress plugins and the required skill set to edit a theme.

Some of the customisations I require will include:

-change of theme default colours (e.g. page background, buttons, border colours around boxes)
-adding editable text areas
-modifying/removing some theme features

Please do not bid if you have not had experience in this kind of job before. If you have had experience on jobs like this please provide examples.

If you are a skilled developer/designer this should be really straight forward job.