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Generally, I love it! Only main suggestion; I like the faded colours in the background, but they seem slightly at odds with the stronger 'rainbow' effect behind the logo/brand name. Try making them more similar.
Also, the green box behind the currently selected tab might look better in the faded orange. Looks great though.

Thanks Toby.
The green box behind the tab would be green only in the about us page. For other pages it will have different colours.
Regarding the faded background colours, trust me I was trying to make them similar to the rainbow/strings but it turned out totally different. Will still work on it to see what I could make.
Thanks for the feedback.