Github Theme based, Add color for variables

I felt uncomfortable for having white colors on variables. So I made Github Theme with variables' color added

What Have I Fixed

Fixed Bracket Colors with Neon blue, green, pink(#4AE168, #00FFFF, #BF00FF)

Fixed Class name with pastel green (#8DC7A0)

Fixed Variable parameter function, 'self' with pastel brown(#CC9966)

Fixed Storage Type colors with pastel yellow (#FFFaaa)

Fixed String with orange (#FFB757)

Fixed Variable with more Vivid Blue (#71ABFF)

Fixed Other Variable with Light Blue (#ABBCFF)