diff --git a/app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt b/app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt
index 7128812..7951693 100644
--- a/app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt
+++ b/app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt
@@ -9,6 +9,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.Toast
+import androidx.core.content.ContextCompat
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import androidx.lifecycle.MutableLiveData
@@ -604,6 +605,9 @@ class HemoCubeFragment : Fragment() {
                 if (calculatedRatio < 0.05)
                     return getString(R.string.error_repeat_test_higher_volume)
                 if (calculatedRatio in 0.05..0.155)
+                    activity?.runOnUiThread {
+                        binding.tvSubtitle4.setTextColor(ContextCompat.getColor(requireContext(), R.color.brightGreen))
+                    }
                     return getString(R.string.normal)
                 if (calculatedRatio in 0.155..0.175)
                     return getString(R.string.negative_borderline)
@@ -631,6 +635,9 @@ class HemoCubeFragment : Fragment() {
             hemoCubeViewModel.messages.postValue("result classification")
             if (predictedDenovixRatio != null) {
                 if (predictedDenovixRatio in 0.0..0.16)
+                    activity?.runOnUiThread {
+                        binding.tvSubtitle4.setTextColor(ContextCompat.getColor(requireContext(), R.color.brightGreen))
+                    }
                     return getString(R.string.normal)
                 if (predictedDenovixRatio in 0.16..0.165)
                     return getString(R.string.negative_borderline)
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 5af8330..c33ea7c 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -9,6 +9,8 @@
     <color name="white">#FFFFFFFF</color>
     <color name="gray">#808080</color>
 
+    <color name="brightGreen">#00FF00</color>
+    <color name="red">#FF0000</color>
     <color name="blue_app">#4daaff</color>
     <color name="blue_app_dark">#005db3</color>
     <color name="blue_app_light">#e5f3ff</color>
@@ -17,7 +19,7 @@
         <color name="primary">#4daaff</color>
         <color name="primary_dark">#005db3</color>
         <color name="primary_light">#e5f3ff</color>
-        <color name="red">#FF0000</color>
+