# Blender 2.8 Principled BSDF : Getting emissive? material when trying to assign hex color as base color

I'm populating spheres off of a csv file and in theory adding a hex color as the base color from the same spreadsheet. While I've looked at other questions that make it clear that a RGB-> hex is problematic due to color management and gamma, that isn't my current problem.

I'm using the Principled BSDF shader and getting an emissive material by default when my emission is set to 0 and I'm using a dielectric material... Any help is appreciated.

import bpy, csv

def hex_to_rgb( hex_value ):
rgb = list(tuple(int(h[i:i+2], 16) for i in (0, 2, 4)))
r = rgb.pop(0)
g = rgb.pop(1)
b = rgb.pop()
return r, g, b

material = bpy.data.materials.get(material_name)

if material is None:
material = bpy.data.materials.new(material_name)

material.use_nodes = True
principled_bsdf = material.node_tree.nodes.get('Principled BSDF')

if principled_bsdf is not None:
principled_bsdf.inputs[0].default_value = (*hex_to_rgb(h), 1) #RGBA
principled_bsdf.inputs[4].default_value = (0) #metallic =1 dielectric=0
principled_bsdf.inputs[7].default_value = (0) #roughness
principled_bsdf.inputs[17].default_value = (0,0,0,0) #emission

obj.active_material = material

path = "//points_hex.csv" #opens hex color spreadsheet

with open(path) as csvfile:
hexcolors = []
names =()
for i, row in enumerate(content) :
if i == 0: continue #skip header
id = row[0]
x,y,z = row [1], row[2], row[3]
group = row [4]
h = row [5]

The RGBA values have to be normalized to a $$\left[0,1\right]$$ range. The shaders will produce strange results when input values exceed the intended range, such as the glow effect you're seeing.