You may have been better off starting 3 threads to deal individually with the 3 problems.
I cannot help with Flash.
Babylon is probably a dictionary/translation add-on or toolbar. You must have clicked on something to get this prompt as it doesn't appear by itself. Uninstall Babylon
I think that you have W7 64 bit. To change windows colours/font colours, etc, the right click on the desktop and choose personalize and see whether you have chosen a theme which has changed your settings. Alternatively enter control panel and appearance and personalisation in that you will see options for many changes. If you open windows glass colours and then go to advanced you can change windows font colours. It may be easier to use system restore.
Referring to one of your earlier queries. You can download stock rates in Banktree.