You can follow the steps:
1) Create a different query on WEBI & drag only object 'Color' .
Which will give you color irrepective of year.
2) Same create another query & drag only object 'year'
Which will give you color irrecpective of color.
Now you can merge year & color object and use the same in your final report.
I hope you can now solve your problem.
Thanks,
Swapnil