YoloSanta

add it before onrendergui() in client.cpp


void DrawRectRainbow(int x, int y, int width, int height, float flSpeed, float &flRainbow)
 {
ImDrawList* windowDrawList = ImGui::GetWindowDrawList();

Color colColor(0, 0, 0, 255);

flRainbow += flSpeed;
if (flRainbow > 1.f) flRainbow = 0.f;

for (int i = 0; i < width; i++)
{
float hue = (1.f / (float)width) * i;
hue -= flRainbow;
if (hue < 0.f) hue += 1.f;

Color colRainbow = colColor.FromHSB(hue, 1.f, 1.f);
windowDrawList->AddRectFilled(ImVec2(x + i, y), ImVec2(width, height), colRainbow.GetU32());
}
}



add that in the menu




static float flRainbow;
 float flSpeed = 0.0003f;
int curWidth = 1;
ImVec2 curPos = ImGui::GetCursorPos();
ImVec2 curWindowPos = ImGui::GetWindowPos();
curPos.x += curWindowPos.x;
curPos.y += curWindowPos.y;
int size;
int y;
Interfaces::Engine()->GetScreenSize(y, size);
DrawRectRainbow(curPos.x - 10, curPos.y - 5, ImGui::GetWindowSize().x + size, curPos.y + -4, flSpeed, flRainbow);




=====================================================================================================

fix for GetU32().

add it in color.hpp
after

static Color FromHSB(float hue, float saturation, float brightness)


ImU32 GetU32()
 {
return ((_color[3] & 0xff) << 24) + ((_color[2] & 0xff) << 16) + ((_color[1] & 0xff) << 8)
+ (_color[0] & 0xff);
//return (ImU32)(((_color[3] & 0xff) << 24) + ((_color[0] & 0xff) << 16) + ((_color[1] & 0xff) << 8) + (_color[2] & 0xff));
}



How it looks: https://imgur.com/a/qOeHd
where to put second part of code:
https://imgur.com/a/WaE7Y

HOW TO CHANGE THE SIZE OR THE BAR:
DrawRectRainbow(curPos.x - 10, curPos.y - 5, ImGui::GetWindowSize().x + size, curPos.y + -4, flSpeed, flRainbow);
-4 is he height change it to your likeing.