To fix the problem you will need to identify what the problem is. The "Beach Ball of Death" indicates that the Mac is struggling to perform some task. This may be related to hard disc problems, network problems, other hardware/software problems.
The usual suspects:
Open Disk Utility (in the Utilities folder within the Applications folder). Select your Mac's hard disc in the left hand pane and the First Aid tab on the right. Click the Repair Permissions button. Let it whir away and fix what it can. Click the Verify Disk button. Green is good and red is bad. If the disc needs repairing you will need to boot from another disc (or the Mac OS installation disc) so the internal disc can be unmounted and repaired.
Open Activity Monitor (also in the Utilities folder). Click on the CPU tab and the list will show any software that is hogging the CPU causing other software to struggle. Quit the hogging software.
If it happens mostly while looking at web sites in a browser it will be the Flash player plug-in. Check you are running the latest version.
Restarting the computer will reset everything.
Check Software Update from the Apple menu to make sure all the system software is up to date.
I am unsure of the model of your computer. If it is an apple PC then the rainbow icon is telling you that you have updates for an application. If it is a Mac PC then you can get rid of it by pressing control, alt and delete.
It is not possible to get rid of Key Items such as Bicycle and Rainbow Pass. Also, if you "got rid of" it then you would no longer be able to go to the Sevii Islands, and do you really want that?
well they do not try to get rid of rainbow fish they sell them alot because they are worth alot of money
There is a few apps you can get rid of off of the Apple Smart 4. You will have to click on the app and then click on the uninstall button.
Cider vinegar will not get rid of a mole on your skin, nor will it get rid of a mole in your garden.
No.
You get the rainbow wing from the radio tower director after you get rid of team rocket. (Same thing in soul silver).
i got it
It was a spell, referred to as the Sleeping Death the apple wasn't really poison.
You can't but you can get rid of all its data.
By filling them in!
just get there by takin' bens rainbow