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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
It worked, what was happening is the b was getting negative value and due to this char1 and char2 were getting undefined.
Thanks
You will want to make sure that r, g, and b are numbers between 0 and 255. Try to work through what would happen if, for example, r equals 260.
same here
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