diff --git a/dlls/vbscript/global.c b/dlls/vbscript/global.c
index 311c892..14276c5 100644
--- a/dlls/vbscript/global.c
+++ b/dlls/vbscript/global.c
@@ -112,9 +112,6 @@ static HRESULT return_short(VARIANT *res, short val)
 
 static HRESULT return_int(VARIANT *res, int val)
 {
-    if((short)val == val)
-        return return_short(res, val);

-
     if(res) {
         V_VT(res) = VT_I4;
         V_I4(res) = val;
@@ -783,8 +780,28 @@ static HRESULT Global_UBound(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VA
 
 static HRESULT Global_RGB(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VARIANT *res)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    HRESULT hres;
+    int i, total, color[3];/* color[0] for red, color[1] for green, color[2] for blue. */
+
+    TRACE("%s %s %s\n", debugstr_variant(arg), debugstr_variant(arg + 1), debugstr_variant(arg + 2));
+
+    assert(args_cnt == 3);
+
+    for(i = 0; i < 3; i++) {
+        hres = to_int(arg + i, color + i);
+        if(FAILED(hres))
+            return hres;
+    }
+
+    for(i = 0; i < 3;i++) {

+        if(color[i] > 255)
+            color[i] = 255;
+        if(color[i] < 0)
+            return MAKE_VBSERROR(VBSE_ILLEGAL_FUNC_CALL);
+    }
+    total = RGB(color[0], color[1], color[2]);
+
+    return return_int(res, total);
 }
 
 static HRESULT Global_Len(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VARIANT *res)
diff --git a/dlls/vbscript/tests/api.vbs b/dlls/vbscript/tests/api.vbs
index d688e17..f9c86f8 100644
--- a/dlls/vbscript/tests/api.vbs
+++ b/dlls/vbscript/tests/api.vbs
@@ -1240,4 +1240,40 @@ Call ok(getVT(Log(CByte(2))) = "VT_R8", "getVT(Log(CByte(2))) = " & getVT(Log(CB
 Call ok(getVT(Date) = "VT_DATE", "getVT(Date) = " & getVT(Date))
 Call ok(getVT(Time) = "VT_DATE", "getVT(Time) = " & getVT(Time))
 
+Sub testRGBError(arg1, arg2, arg3, error_num1, error_num2)
+    on error resume next
+    Dim x
+
+    Call Err.clear()
+    x = RGB(arg1, arg2, arg3)
+    Call ok(Err.number = error_num1, "Err.number1 = " & Err.number)
+
+    Call Err.clear()
+    Call RGB(arg1, arg2, arg3)
+    Call ok(Err.number = error_num2, "Err.number2 = " & Err.number)

+End Sub
+
+Call ok(RGB(-0.5, -0.5, -0.5) =  0, "RGB(-0.5, -0.5, -0.5) = " & RGB(-0.5, -0.5, -0.5))
+Call ok(getVT(RGB(-0.5, -0.5, -0.5)) = "VT_I4", "getVT(RGB(-0.5, -0.5, -0.5)) = " & getVT(RGB(-0.5, -0.5, -0.5)))
+Call ok(RGB(0, 0, 0) =  0, "RGB(0, 0, 0) = " & RGB(0, 0, 0))
+Call ok(getVT(RGB(0, 0, 0)) = "VT_I4", "getVT(RGB(0, 0, 0)) = " & getVT(RGB(0, 0, 0)))
+Call ok(RGB(0.49, 0.49, 0.49) =  0, "RGB(0.49, 0.49, 0.49) = " & RGB(0.49, 0.49, 0.49))
+Call ok(getVT(RGB(0.49, 0.49, 0.49)) = "VT_I4", "getVT(RGB(0.49, 0.49, 0.49)) = " & getVT(RGB(0.49, 0.49, 0.49)))
+Call ok(RGB(0.5, 0.5, 0.5) =  0, "RGB(0.5, 0.5, 0.5) = " & RGB(0.5, 0.5, 0.5))
+Call ok(getVT(RGB(0.5, 0.5, 0.5)) = "VT_I4", "getVT(RGB(0.5, 0.5, 0.5)) = " & getVT(RGB(0.5, 0.5, 0.5)))
+Call ok(RGB(1, 1, 1) =  65793, "RGB(1, 1, 1) = " & RGB(1, 1, 1))

+Call ok(getVT(RGB(1, 1, 1)) = "VT_I4", "getVT(RGB(1, 1, 1)) = " & getVT(RGB(1, 1, 1)))
+Call ok(RGB(1.49, 1.49, 1.49) =  65793, "RGB(1.49, 1.49, 1.49) = " & RGB(1.49, 1.49, 1.49))
+Call ok(getVT(RGB(1.49, 1.49, 1.49)) = "VT_I4", "getVT(RGB(1.49, 1.49, 1.49)) = " & getVT(RGB(1.49, 1.49, 1.49)))
+Call ok(RGB(2, 2, 2) =  131586, "RGB(2, 2, 2) = " & RGB(2, 2, 2))
+Call ok(getVT(RGB(2, 2, 2)) = "VT_I4", "getVT(RGB(2, 2, 2)) = " & getVT(RGB(2, 2, 2)))
+Call ok(RGB(255, 255, 255) =  16777215, "RGB(255, 255, 255) = " & RGB(255, 255, 255))
+Call ok(getVT(RGB(255, 255, 255)) = "VT_I4", "getVT(RGB(255, 255, 255)) = " & getVT(RGB(255, 255, 255)))
+Call ok(RGB(256, 256, 256) =  16777215, "RGB(256, 256, 256) = " & RGB(256, 256, 256))
+Call ok(getVT(RGB(256, 256, 256)) = "VT_I4", "getVT(RGB(256, 256, 256)) = " & getVT(RGB(256, 256, 256)))
+Call ok(RGB("255", "255", "255") =  16777215, "RGB(""255"", ""255"", ""255"") = " & RGB("255", "255", "255"))
+Call ok(getVT(RGB("255", "255", "255")) = "VT_I4", "getVT(RGB(""255"", ""255"", ""255"")) = " & getVT(RGB("255", "255", "255")))