In your "udm-resources/udm-custom.js" file, look for this block of code:
Code:
um.items = [
"3", // margin between items ["n" pixels]
"1", // border size ["n" pixels] (single value only)
"collapse", // border collapse ["collapse"|"separate"] (only applies when margin = "0")
"#999999 #999999 #999999 #999999",// border colors ["color"|"#hex"|"rgb()"] (single, double or four values)
"solid", // border styles ["solid"|"double"|"dotted"|"dashed"|"groove"|"ridge"|"inset"|"outset"] (single, double or four values; be careful with using "none")
"#999999 #999999 #999999 #999999",// hover/focus border colors ["color"|"#hex"|"rgb()"] (single, double or four values)
"solid", // hover/focus border styles ["solid"|"double"|"dotted"|"dashed"|"groove"|"ridge"|"inset"|"outset"] (single, double or four values; be careful with using "none")
"#999999 #999999 #999999 #999999",// visited border colors ["color"|"#hex"|"rgb()"] (single, double or four values)
"solid solid solid solid",// visited border styles ["solid"|"double"|"dotted"|"dashed"|"groove"|"ridge"|"inset"|"outset"] (single, double or four values; be careful with using "none")
"4", // left/right padding ["n" pixels] (single value only)
"6", // top/bottom padding ["n" pixels] (single value only)
"#ff6600", // background ["color"|"#hex"|"rgb()"|"image.gif"]
"#ffe", // hover/focus background ["color"|"#hex"|"rgb()"|"image.gif"]
"#ff6600", // visited background ["color"|"#hex"|"rgb()"|"image.gif"]
"75%", // font size ["em"|"ex"|"%"|"px"|"pt"|"absolute-size"|"relative-size"]
"veranda,sans-serif",// font family ["font1,font2,font3"] (always end with a generic family name)
"lighter", // font weight ["normal"|"bold"|"bolder"|"lighter|"100" to "900"]
"none", // text decoration ["none"|"underline"|"overline"|"line-through"]
"left", // text-align ["left"|"right"|"center"]
"#000000", // color ["color"|"#hex"|"rgb()"]
"#b05010", // hover/focus color ["color"|"#hex"|"rgb()"]
"#000000", // visited color ["color"|"#hex"|"rgb()"]
"normal", // font-style ["normal"|"italic"|"oblique"]
"normal", // hover/focus font-style ["normal"|"italic"|"oblique"]
"normal", // visited font-style ["normal"|"italic"|"oblique"]
"letter-spacing:1px !important;",// additional link CSS (careful!)
"", // additional hover/focus CSS (careful!)
"", // additional visited CSS (careful!)
"right-green.gif",// menu indicator character/image ["text"|"image.gif"|"none"]
"right-red.gif",// menu indicator rollover character/image ["text"|"image.gif"|"none"] (must be same type)
"0", // clipping width of indicator image ["n" pixels] (only when using image arrows)
"..", // alt text of indicator image ["text"] (only when using image arrows)
Change the "menu indicator images" from "right-green.gif" and "right-red.gif" to "none".
Hope that helps.
];