vis: change light background (also for st) and embedded background

vis/.config/vis/themes/lupan-light.lua

@@ -1,6 +1,6 @@
 -- Eight-color scheme
 local lexers = vis.lexers
-lexers.STYLE_DEFAULT ='back:#dae4f1,fore:#1f212e'
+lexers.STYLE_DEFAULT ='back:#f2f2f3,#e0e5eb,fore:#1f212e'
 lexers.STYLE_NOTHING = ''
 lexers.STYLE_ATTRIBUTE = 'fore:#a1a3aa,bold'
 lexers.STYLE_CLASS = 'fore:yellow,bold'
@@ -21,7 +21,7 @@ lexers.STYLE_TAG = 'fore:#705943,bold'
 lexers.STYLE_TYPE = 'fore:#7461d1,bold'
 lexers.STYLE_VARIABLE = 'fore:#8c5eba,bold'
 lexers.STYLE_WHITESPACE = ''
-lexers.STYLE_EMBEDDED = 'back:#2d3353,bold'
+lexers.STYLE_EMBEDDED = 'back:#e0e5eb,bold'
 lexers.STYLE_IDENTIFIER = ''
 
 lexers.STYLE_LINENUMBER = ''

xsession/.Xresources

@@ -80,7 +80,7 @@ st.color13: #8f248f
 st.color14: #509595
 st.color15: #dbdff0
 #else
-st.background: #dae4f1
+st.background: #f2f2f3
 st.foreground: #1f212e
 st.cursorColor: #bf8040
 st.reverse-cursor: #1f212e