Press the green flag to remove the circular icon obscuring 'tu'. You can press space or click to switch from my version to the original and back. The letters on the top row are not part of the symbol.
I liked the idea of the orthography used by @Megalovania2017, but didn't like its over-reliance on color. So I made this version with only 6 colors that uses symbols to show the consonants. This was made in about 20 minutes. Please note that I used the colors I used because those colors are how I see the letters in my head when I think about them. The symbols are arbitrary and partially based on English.