Can "What" or "Which" be used as demonstrative pronouns?

Can “What” or “Which” be used as demonstrative pronouns (this, that, those)?

Instead of

“What colors are you using to paint the waterfall and how are you using those colors?”

is the following also grammatically correct?

“How are you using what colors to paint the waterfall?”

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Instead of

“What information are marketers trying to convey in the advertisement and how are they trying to convey that information?”

is the following also grammatically correct?

“How are marketers trying to convey what information in the advertisement campaign?”