[docs] Hardcode listed colors in /customization/color/#playground (#27446)
[docs] Hardcode listed colors in /customization/color/#playground (#27446)


mui-org/material-ui,rscnt/material-ui,oliviertassinari/material-ui,oliviertassinari/material-ui,rscnt/material-ui,oliviertassinari/material-ui,mui-org/material-ui,rscnt/material-ui,mui-org/material-ui